diff --git a/setup.py b/setup.py
index 9b3a240..f6a133a 100644
--- a/setup.py
+++ b/setup.py
@@ -63,7 +63,8 @@ def read(fname):
 	],
 	install_requires = [
 		'kombu',
-		'termcolor'
+		'termcolor',
+		'pyrtds'
 	],
 	data_files = [
 		('/etc/villas/controller', glob('etc/*.json')),
diff --git a/villas/controller/simulator.py b/villas/controller/simulator.py
index 76ad92b..9c47484 100644
--- a/villas/controller/simulator.py
+++ b/villas/controller/simulator.py
@@ -44,7 +44,7 @@ def set_connection(self, connection):
 
 	@staticmethod
 	def from_json(json):
-		from .simulators import dummy, generic, rtlab, rscad
+		from .simulators import dummy, generic, rtlab, rtds
 
 		if json['type'] == "dummy":
 			return dummy.DummySimulator(**json)
@@ -55,8 +55,8 @@ def from_json(json):
 			return dpsim.DPsimSimulator(**json)
 		elif json['type'] == "rtlab":
 			return dpsim.RTLabSimulator(**json)
-		elif json['type'] == "rscad":
-			return dpsim.RSCADSimulator(**json)
+		elif json['type'] == "rtds":
+			return dpsim.RTDSSimulator(**json)
 		else:
 			return None
 
diff --git a/villas/controller/simulators/rscad.py b/villas/controller/simulators/rscad.py
deleted file mode 100644
index 9968f40..0000000
--- a/villas/controller/simulators/rscad.py
+++ /dev/null
@@ -1,49 +0,0 @@
-import socket
-import time
-
-from .. import simulator
-
-#from rtds.rack.rack import Rack
-
-class RscadSimulator(simulator.Simulator):
-
-	def __init__(self, host, number):
-		Rack.__init__(self, host, number)
-
-		self.name = '%s(%d)' % (host, number)
-
-	def start(self, body):
-		Simulator.start(self, body)
-
-	def stop(self, body):
-		Simulator.stop(self, body)
-
-	def pause(self, body):
-		Simulator.pause(self, body)
-
-	def resume(self, body):
-		Simulator.resume(self, body)
-
-	@property
-	def state(self):
-		try:
-			user, case = self.ping()
-
-			if len(user) > 0:
-				state = {
-					'status' : 'running',
-					'user' : user,
-					'case' : case
-				}
-			else:
-				state = {
-					'status' : 'free'
-				}
-		except socket.timeout:
-			state = {
-				'status' : 'offline'
-			}
-
-		state['time'] = int(round(time.time() * 1000))
-
-		return state
diff --git a/villas/controller/simulators/rtds.py b/villas/controller/simulators/rtds.py
new file mode 100644
index 0000000..a244a61
--- /dev/null
+++ b/villas/controller/simulators/rtds.py
@@ -0,0 +1,38 @@
+import socket
+import rtds
+import threading
+import time
+
+from ..simulator import Simulator
+
+class RTDSSimulator(Simulator):
+
+	def __init__(self, **args):
+		super().__init__(self, **args)
+
+		self.host = args['host']
+		self.number = args['number']
+		self.interval = args['interval'] if 'interval' in args else 1
+
+		self.rack = rtds.Rack(self.host, self.number)
+
+		t = threading.Thread()
+		t.start()
+
+	def run(self):
+		while True:
+			user, case = self.rack.ping()
+
+			time.sleep(self.interval)
+
+	def __str__(self):
+		return "%sSimulator #%d <%s: %s, host=%s>" % (self.type, self.number, self.name, self.uuid, self.host)
+
+	@property
+	def state(self):
+		state = super().state
+
+		state['user'] = self.current_user
+		state['case'] = self.current_case
+
+		return state